Mathew Duffey
Mathew Duffey is a Marriage & Family Therapist in Yuba City, CA, registered under NPI 1003457151.
Getting there
Here is what surrounds this office in Yuba City, based on OpenStreetMap data collected Sep 28, 2026. Parking is available about 758 ft away. There is EV charging 0.23 mi from the office (Electrify America) — useful if you are driving in from out of town. The nearest transit stop is 600 ft away, served by Gray Ave and Ainsley Ave (SB). A pharmacy sits 0.21 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.40 mi away.
Getting here and what is nearby
Parking 440 ft ~2 min
Transit Gray Ave and Ainsley Ave (NB) 470 ft ~2 min
Transit Butte House Rd. and Yuba City Mall Signal Ent. 549 ft ~3 min
Parking 532 ft ~3 min
Transit Gray Ave and Ainsley Ave (SB) 600 ft ~3 min
Pharmacy CVS Pharmacy 656 ft ~3 min
Coffee Starbucks 709 ft ~3 min
Parking 758 ft ~3 min
Restaurant Chipotle 0.20 mi ~5 min
Pharmacy Walgreens 0.21 mi ~5 min
EV charging Electrify America 0.23 mi ~5 min
1153 Butte House Road, Yuba City 95991
Restaurant Jack in the Box 0.25 mi ~5 min
1111 Colusa Avenue, Yuba City 95991
Mo-Su 06:00-22:00,00:00-00:00
Convenience Shell 0.26 mi ~6 min
Gas station Shell 0.27 mi ~6 min
Restaurant Panera Bread 0.27 mi ~6 min
Convenience ampm 0.28 mi ~6 min
Gas station Arco 0.28 mi ~6 min
Hotel Quality Inn 0.38 mi ~8 min
Grocery FoodMaxx 0.39 mi ~8 min
Mo-Su 06:00-24:00
Coffee Starbucks 0.40 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 156206 | CA | Marriage & Family Therapist primary |
This provider holds licence 156206 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Marriage And Family Therapist
- PAC ID
- 4385144492
- Enrollment ID
- I20250822004087
Medicare enrolment is recorded as approved under the provider type Practitioner - Marriage And Family Therapist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Marriage & Family Therapist covers
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups. NUCC Health Care Provider Taxonomy, code 106H00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003457151 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 30, 2019 |
| Last updated | Jul 21, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
1103 BUTTE HOUSE RD Yuba City, CA 95991 (530) 913-7221 |
| Mailing address |
1000 LINCOLN ROAD SUITE H, PMB #60 Yuba City, CA 95991 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 4 | 5 | 7 | 1 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 5 | 5 | 1 | 1 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.